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Flashcards in meninges Deck (30)
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1
Q

two types of meningitis

A

bacterial (meds needed) and viral

2
Q

meninges are () layers that cover the () and ()

A

three, brain adn spinal cord

3
Q

three layers

A

dura mater hard mother
arachnoid mater spider like
pia mater soft mother

4
Q

dura mater aka

A

pachymeninges

5
Q

ligament that connects the dura mater and pia mater

A

denticulate lig

6
Q

dura mater is a loose sheath of

A

dense connective tissue (not purely white cause has blood vessels)

7
Q

dura m covers the () and () and ends at ()

A

brain and spinal cord and ends at coccyx (also attaches at foramen magnum)

8
Q

what are the folds of dura mater called in the skull

A

falx cerebri and tentorum cerebelli

9
Q

dural nerve supply

A

branches of trigeminal (5), vagus (10), C1-3, branches from sympathetic system

10
Q

what make up the leptomeninges (lepto = soft/webby)

A

arachnoid and pia

11
Q

what is a thin, fibrous transparent membrane that provides cushioning effect for cns

A

arachnoid mater

12
Q

what mater adheres to the spinal cored

A

pia

13
Q

outermost space

A

epidural,

14
Q

where is the epidural space

A

between periosteum of ventral body anteriorly and vertebral arch posteriorly and teh dura mater (right behind laminectomy)

15
Q

what does the epidural space contain

A

internal vertbral venous plexus

16
Q

what is the internal vertebral venous plexus

A

network of veins on inside of lamina

17
Q

where is the subdural space

A

b/w arachnoid and the dura

18
Q

what does the subdural space contain

A

serous fluid

19
Q

what does serous fluid do

A

its theres for buoyancy and protection against hitting bone BUOYANCY MAINLY (also some nutrition and movemtn)

20
Q

where find subarachnoid space

A

innermost, b/w arachnoid and pia

21
Q

what does subarachnoid space contain

A

CSF cerebrospinal fluid, dorsal and ventral nerve roots, filum terminale and cauda equina

22
Q

csf is secreted by

A

choroid plexus located in ventricles in brain

23
Q

csf surrounds what

A

brain and spinal cord

24
Q

csf function

A

lubrication

25
Q

total volume of csf

A

80-150 ml

26
Q

how much csf removed with a spinal tap

A

50 ml

27
Q

how often replace itself

A

4-5 times/daily

28
Q

spinal cord is a direct connection of

A

medulla oblongota of brain

29
Q

spinal cord begins at

A

foramen magnum oc-c1

30
Q

spinal cord ends at

A

conus medullaris L2 in adult, l4 in child